Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Setting up a Network Networks This icon indicates the slide contains activities created in Flash. These activities are not editable. For more detailed instructions, see the Getting Started presentation. 1 of 12 © Boardworks Ltd 2004 Network hardware Every computer on a network needs a network interface card (NIC) which is connected to the motherboard inside the computer. NIC switch A cable plugs into the card, and the other end of the cable plugs into a switch. The switch is then linked to the server. 2 of 12 © Boardworks Ltd 2004 Building a network 3 of 12 © Boardworks Ltd 2004 Cables Most networks use cables to connect the computers. Twisted-pair cables are the most common. The cabling is often called Ethernet cabling. Category 5 (Cat5) twisted-pair cables can carry 100Mb per second over distances of up to 100 metres. Coaxial cable is better at resisting interference and can be run for longer lengths, but it isn’t as flexible. Fibre optic cable can transfer data at higher speeds over longer distances, and can be used outside buildings, but it is much more expensive. It has a central core made of glass and transmits the signals using light. 4 of 12 © Boardworks Ltd 2004 5 of 12 © Boardworks Ltd 2004 Network topologies The way networks are arranged is called a network topology. Networks can be a single topology or a mixture of more than one. Packet Whatever the topology, each for IP computer has to have a network address address so that the packets of 216 data (chunks of data, split into small parts to find the quickest route, and reassembled when they reach their destination) from other computers on the network know where to go. This is an IP address, just as it is on the Internet. 6 of 12 © Boardworks Ltd 2004 Bus network 7 of 12 © Boardworks Ltd 2004 Ring network 8 of 12 © Boardworks Ltd 2004 Star network 9 of 12 © Boardworks Ltd 2004 Mesh network 10 of 12 © Boardworks Ltd 2004 Build your own network 11 of 12 © Boardworks Ltd 2004 Summary Computers on a network each need a network interface card (NIC) and cable to connect them, often through switches. There are different cables that can be used including Cat5, coaxial cable and fibre optic cable. The way a network is arranged is called a topology. Network topologies can be bus, star, ring or mesh. Some networks use more than one topology – we call them hybrids. 12 of 12 © Boardworks Ltd 2004